The Enduring Voice of an Empire: An Introduction to Middle Persian Language and Texts

Middle Persian, most commonly known by the name of its script, Pahlavi, is an Iranian language that served as the official administrative, literary, and religious language of the Sasanian Empire (224–651 CE). It represents the crucial middle stage in the documented history of the Persian language, forming a linguistic and cultural bridge between the Old Persian of the Achaemenid emperors and the New Persian (Farsi) that flourishes today. As the language of a major world power for over four centuries, Middle Persian provides an invaluable window into the society, religion, and imperial ideology of pre-Islamic Iran.

Historical Development and Dialects

The evolution of the Persian language is traditionally divided into three stages: Old, Middle, and New. Middle Persian emerged from its ancestor, Old Persian, the language of Darius and Xerxes recorded in cuneiform inscriptions. This transition, beginning around 300 BCE after the fall of the Achaemenid Empire, was a gradual process marked by significant phonological and morphological simplification. The complex system of grammatical cases and verb conjugations found in Old Persian began to decay, leading to a more analytic linguistic structure.

When Ardashir I established the Sasanian dynasty in 224 CE, he elevated his native dialect from Persis (modern Fārs province) to the status of the empire's official language. This dialect was Middle Persian. However, it did not exist in a vacuum. For centuries, the Iranian plateau had been dominated by the Parthians, who spoke Parthian, a related but distinct Northwest Iranian language. Early Sasanian inscriptions are often trilingual or bilingual, written in Middle Persian, Parthian, and Greek, demonstrating a period of transition where Parthian still held significant prestige. Over time, Middle Persian supplanted Parthian as the sole language of imperial administration, though Parthian left a lasting influence on its vocabulary.

Beyond the official Sasanian language, other Middle Iranian languages and dialects coexisted, including Sogdian, Khotanese, and Bactrian. Within the Middle Persian sphere itself, a key distinction exists between Zoroastrian Middle Persian, preserved in the Pahlavi books, and Manichaean Middle Persian, found in the writings of the prophet Mani and his followers. While linguistically very similar, they used entirely different scripts and exhibit minor dialectal variations, providing scholars with complementary sources for understanding the language.

1. c. 300 BCE
   Beginning of the Middle Iranian Period

   Old Persian gradually evolves, losing its complex case system and marking the linguistic shift to the Middle Persian stage.

2. 224 CE
   Founding of the Sasanian Empire
3. c. 262 CE
   Inscription of Shapur I
4. c. 274 CE
   Execution of Mani
5. 651 CE
   Fall of the Sasanian Empire
6. c. 800-900 CE
   Codification of Pahlavi Books

The Pahlavi Writing Systems

The term 'Pahlavi' is most precisely applied to the writing systems used for Middle Persian, rather than the language itself. These scripts are derived from the Aramaic alphabet, which had been the administrative script of the preceding Achaemenid Empire. This historical inheritance led to one of the most characteristic and challenging features of Pahlavi: the use of Aramaic logograms or ideograms, known in Persian as *hozwārishn* (or *uzwārišn*).

In practice, this meant that scribes would write a common Aramaic word (e.g., 𐡌𐡋𐡊𐡀, MLK', 'king') but read it aloud as its Middle Persian equivalent (*šāh*). Over 1,000 such logograms have been documented, covering pronouns, prepositions, and common nouns and verbs. A reader of Pahlavi thus had to master not only the alphabet but also a large repertoire of these ideograms. The Pahlavi scripts are also known for their ambiguity. Over the centuries, several distinct Aramaic letters merged in form, resulting in a single grapheme representing multiple phonetic values. For instance, in Book Pahlavi, the same character can be read as /g/, /d/, or /y/ depending on the context.

Varieties of Pahlavi Script

• **Inscriptional Pahlavi:** This is the earliest, monumental form of the script, seen on rock reliefs and coins from the 3rd and 4th centuries. The letters are distinct and non-cursive, making it the most legible form of Pahlavi.
• **Psalter Pahlavi:** A slightly later, more cursive script found in a single surviving document: a translation of the Psalms of David. It is unique for its clarity and features a special sign to distinguish certain letters.
• **Book Pahlavi:** This is the most common but also the most difficult form of the script. It is a highly cursive, ligatured script used in the bulk of Zoroastrian manuscripts. Its ambiguity, stemming from the merger of many letter forms, makes it notoriously challenging to decipher.

The Corpus of Middle Persian Literature

The surviving body of Middle Persian literature is vast but fragmentary, heavily skewed towards religious topics. The overwhelming majority of texts were preserved and transmitted by two rival religious communities: the Zoroastrians and the Manichaeans. Secular literature, such as court poetry, historical chronicles, and scientific works, is known to have existed but survives largely through later Arabic or New Persian translations and summaries.

Zoroastrian Pahlavi Literature

The heart of Pahlavi literature is the Zoroastrian corpus. It is crucial to note that while these texts reflect the theology and traditions of the Sasanian period, most were compiled, edited, and given their final form by Zoroastrian priests in the 9th and 10th centuries, under Islamic rule. These high priests were engaged in a monumental effort to preserve the knowledge of their faith in the face of a new dominant culture. The principal works include:

• **The Dēnkard (Acts of Religion):** A massive, 9-book encyclopedia of Zoroastrian knowledge. It covers everything from theology, cosmology, and ethics to a summary of the lost books of the Avesta. Books III-IX survive.
• **The Bundahišn (Primal Creation):** A foundational text detailing the Zoroastrian creation myth, the cosmic struggle between Ohrmazd (Ahura Mazda) and Ahriman (Angra Mainyu), and eschatology.
• **Zand (Commentary):** These are Middle Persian translations and extensive commentaries on the sacred Avestan texts. The Zand provided interpretations of the ancient and linguistically difficult Avestan verses for the Sasanian-era community.
• **Wizīdagīhā ī Zādspram (Selections of Zādspram):** A concise but comprehensive summary of Zoroastrian doctrine, similar in scope to the Bundahišn but with a different structure.
• **Ardā Wīrāz Nāmag (Book of Ardā Wīrāz):** A vivid account of a righteous man's visionary journey through heaven and hell, offering a detailed glimpse into Zoroastrian concepts of the afterlife.

Manichaean and Other Texts

The prophet Mani (c. 216–274 CE) and his followers were prolific writers. Unlike the ambiguous Pahlavi script, they used a very clear and phonetically precise script derived from Syriac. Archaeological discoveries in the early 20th century, particularly at Turpan in modern-day Xinjiang, China, unearthed a treasure trove of Manichaean texts in Middle Persian and Parthian. These include hymns, theological treatises, parables (as in the Kephalaia), and parts of Mani's own canonical works. These texts are invaluable because they are contemporary to the Sasanian period and provide a non-Zoroastrian, precisely written source for the language.

Additionally, a small but important corpus of non-religious texts survives. These include hundreds of ostraca and papyri from Egypt and Mesopotamia dealing with administrative and economic matters, as well as monumental inscriptions like Shapur I's trilingual account of his victories over the Romans at the Ka'ba-ye Zartosht near Persepolis.

Linguistic Features

Linguistically, Middle Persian marks a significant simplification from Old Persian. The most notable change is the near-total collapse of the Old Persian grammatical case system. Where Old Persian had nominative, accusative, genitive, dative, ablative, and instrumental cases, Middle Persian relies on a two-case system (direct and oblique) in its earlier stages, which eventually disappears entirely. Word order and prepositions take over the grammatical functions previously handled by noun endings.

The verbal system also underwent simplification, though it developed new features. The past tense, for example, evolved to be constructed using the past participle combined with an auxiliary verb (e.g., 'he has come'), a structure known as a split-ergative system in its early phase. This periphrastic construction is a direct forerunner of the past tense systems found in New Persian. Phonologically, many of the final consonants and syllables present in Old Persian were dropped, leading to shorter, more streamlined words.

Legacy and Transition to New Persian

With the Arab conquest of Iran in the mid-7th century, the Sasanian Empire collapsed, and Middle Persian lost its status as the language of power. Arabic became the new language of administration and high culture. However, Middle Persian did not disappear overnight. It continued to be spoken by the general populace and used as a literary language by the Zoroastrian minority for several centuries. It is during this period, from the 7th to the 10th century, that the language underwent its final transformation.

This transition to New Persian involved two key developments. First was the adoption of the Arabic script, modified with four extra letters (پ, چ, ژ, گ) to accommodate Persian phonology. This new Perso-Arabic script was far more phonetically precise than the cumbersome Pahlavi system and facilitated a literary renaissance. Second was the infusion of a vast quantity of Arabic vocabulary, particularly in the domains of science, philosophy, and religion. Despite this influx, the grammatical core of the language remained distinctly Iranian, a direct continuation of Middle Persian.

The Pahlavi books, compiled as an act of cultural preservation, thus became the final monument of Middle Persian literature. They safeguarded the cosmology, mythology, and ethical teachings of a millennium of pre-Islamic Iranian civilization, forming a bridge not only to New Persian but also to the far more ancient world of the Avesta. The study of Pahlavi is therefore indispensable for understanding the Sasanian Empire, the development of Zoroastrianism, and the deep historical roots of the Persian language and culture that thrive today.